August 2018 Chemistry Regents Questions 11-20

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In terms of entropy and energy, systems in nature tend to undergo changes toward

Based on Table S, an atom of which element has the strongest attraction for electrons in a chemical bond?

Compared to H2S, the higher boiling point of H 2O is due to the

Which statement describes the energy changes that occur as bonds are broken and formed during a chemical reaction?

Which sample at STP has the same number of atoms as 18 liters of Ne(g) at STP?

A solid sample of copper is an excellent conductor of electric current. Which type of chemical bonds are in the sample?

At which temperature and pressure would a sample of helium behave most like an ideal gas?

Which formula represents an asymmetrical molecule?